Thursday, November 20, 2014

Muon's in the air

Humans can only see part of the radiation from the sun - the visible light spectrum.  What about the unseen gifts from our local star?  Some are safe for humans and life on Earth, and other are damaging.  We discussed how our atmosphere protects us from some of the most dangerous forms of cosmic radiation - some of the ultraviolet spectrum, x-rays, and gamma rays.  Using a homemade cloud chamber, Rieke 3rd grade students were able to view a normally invisible safe cosmic particles called muons.